Prosecution Insights
Last updated: October 27, 2026

Yung-Sheng M Tsui, USPTO Patent Examiner

Listed by the USPTO as TSUI, YUNG-SHENG M

Tech Center 1700 • Art Units: 1675 1684 1742 1743

This examiner grants 66% of resolved cases

Analysis

TSUI, YUNG-SHENG M is a USPTO patent examiner in Tech Center 1700 and art unit 1675. The examiner has 552 resolved cases, an allowance rate of 66.5%, and a median of 1040 days to allowance. The interview lift is 6.3%, indicating a modest positive association between interviews and allowance outcomes.

The listed companies are Seiko Epson Corporation, Rolls-Royce plc, and 10x Genomics Inc. The listed firms are WORKMAN NYDEGGER, Ballard Spahr LLP, and Barclay Damon, LLP. The profile supports a balanced approach, with careful claim analysis needed under the allowance rate and interviews available as a limited but constructive supplement.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Performance Statistics

66.5%
Allow Rate
+1.5% vs TC avg
588
Total Applications
+6.3%
Interview Lift
1040
Avg Prosecution Days
Based on 552 resolved cases, 2023–2026

Rejection Statute Breakdown

1.4%
§101 Eligibility
29.8%
§102 Novelty
37.8%
§103 Obviousness
23.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18593465 POWDER CONTROL FOR ADDITIVE MANUFACTURING SYSTEMS Non-Final OA Rolls-Royce plc
18646871 METHOD FOR MANUFACTURING THREE-DIMENSIONAL OBJECT Final Rejection SEIKO EPSON CORPORATION
18305524 INFORMATION PROCESSING APPARATUS AND THREE-DIMENSIONAL SHAPING APPARATUS Final Rejection SEIKO EPSON CORPORATION
18260902 METHOD FOR SPATIAL MAPPING AND SEQUENCING OF CELLS OR ORGANELLES Non-Final OA CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
18628080 METHODS, SYSTEMS, AND KITS FOR DUAL INDEXING NUCLEIC ACIDS Non-Final OA 10x Genomics, Inc.
18777988 METHOD AND DEVICE FOR PRODUCING A PARTICLE FOAM PART AND A METHOD FOR CALIBRATING THE PRODUCTION PROCESS Final Rejection adidas AG
18674298 SYSTEMS AND METHODS FOR ADDITIVELY MANUFACTURING THREE-DIMENSIONAL OBJECTS WITH ARRAY OF LASER DIODES Final Rejection General Electric Company
17980582 CONTROLLED LOCAL MODIFICATION OF VOLUMETRIC PHYSICAL PROPERTIES Non-Final OA DENTSPLY SIRONA Inc.
18701094 PROTEINACEOUS MOLECULES AND USES THEREFOR Non-Final OA The University of Tokyo
18861765 MOLD RELEASE FILM AND METHOD FOR MANUFACTURING SEMICONDUCTOR PACKAGE Non-Final OA RESONAC CORPORATION
18558035 METHODS FOR MAKING LIBRARIES FOR NUCLEIC ACID SEQUENCING Final Rejection BECTON, DICKINSON AND COMPANY
18409612 METHODS AND COMPOSITIONS FOR MUTAGENESIS SCREENING IN MAMMALIAN CELLS Non-Final OA THE BOARD OF REGENTS OF THE UNIVERSITY OF TEXAS SYSTEM
18757330 Systems for Printing Three-Dimensional Objects Non-Final OA Relativity Space, Inc.
18664102 DIGITAL MICROFLUIDIC SYSTEM FOR SINGLE-CELL ISOLATION AND CHARACTERIZATION OF ANALYTES Non-Final OA Illumina, Inc.
18570236 PROCESSING METHODS FOR NUCLEIC ACID DATA STORAGE Non-Final OA CATALOG TECHNOLOGIES, INC.
18503562 ORTHODONTIC APPLIANCES, SYSTEMS FOR MANUFACTURING ORTHODONTIC APPLIANCES, AND METHODS OF MANUFACTURING ORTHODONTIC APPLIANCES UTILIZING THOSE SYSTEMS Non-Final OA Ormco Corporation (Spark/Aligner Division)

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Frequently Asked Questions

What is examiner Yung-Sheng M Tsui's allowance rate?

66.5% of resolved applications examined by Yung-Sheng M Tsui were allowed (552 resolved cases), compared with 32.5% across Art Unit 1675 over the last five years.

Does an interview help with examiner Yung-Sheng M Tsui?

This examiner's interview lift is +6.3 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Yung-Sheng M Tsui take to allow a patent?

Applications allowed by Yung-Sheng M Tsui took 1,040 days on average from filing to allowance.

Which art unit does examiner Yung-Sheng M Tsui work in?

Yung-Sheng M Tsui examines applications in Art Unit 1675 in Tech Center 1700 (Chemistry & Materials).

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